<!DOCTYPE html>
<html lang="cn">

<head>
    <meta charset="UTF-8">
    <title>HTML5</title>
    <style>
    </style>
</head>

<body>
    <div>
        <video controls width="704" height="400" autoplay defaultMuted='true'>
            <source src="video.mp4" type="video/mp4">
        </video>
        <div>

            <audio controls src="demo.mp3"></audio>
        </div>
        <div>
            <canvas id="canvas" width="900" height="600" style="background-color: #f0f0f0; float: right;" />
        </div>
        <div>
            <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="190" height="190">
                <polygon points="100,10 40,180 190,60 10,60 160,180" style="fill:red;stroke:purple;stroke-width:5;fill-rule:evenodd;"></polygon>
            </svg>
        </div>
        <script src="canvas.js"></script>

</body>

</html>